Never before _____ so highly successful in his attempts

Never before _____ so highly successful in his attempts to change the weather slightly on a very small scale.
[ ]
A. man has been
B. man is
C. will man be
D. has man been
typ6362979 1年前 已收到1个回答 举报

liy830317 幼苗

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D

1年前

3
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